Add 9/12 and 5/84
9/12 + 5/84 is 17/21.
Steps for adding fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 12 and 84 is 84
Next, find the equivalent fraction of both fractional numbers with denominator 84 - For the 1st fraction, since 12 × 7 = 84,
9/12 = 9 × 7/12 × 7 = 63/84 - Likewise, for the 2nd fraction, since 84 × 1 = 84,
5/84 = 5 × 1/84 × 1 = 5/84 - Add the two like fractions:
63/84 + 5/84 = 63 + 5/84 = 68/84 - 68/84 simplified gives 17/21
- So, 9/12 + 5/84 = 17/21
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 18/12+5/84 9/12+10/84 9/24+5/84 27/12+5/84 9/12+15/84 9/36+5/84 45/12+5/84 9/12+25/84 9/60+5/84 63/12+5/84 9/12+35/84 9/84+5/84